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This YHM barrel features a 5.56x45mm NATO chamber for full compatibility with surplus mil-spec ammunition or commercial 223 Remington ammunition. Constructed of 4140 chrome moly steel with a threaded muzzle, the barrel is Melonited for ultimate surface protection. The melonite coating provides a thinner surface than chrome-lining, so bore friction is reduced for better accuracy. In addition, melonite is harder than chrome-lining providing a longer wear life.
The use of this barrel on an AR Pistol is legal, but the use of this barrel on any AR15 rifle/carbine will qualify the firearm as an SBR and the firearm needs to be registered as such.

  • Surface: Diamond Fluted
  • Length: 10.5″
  • Weight: 1.30 lbs.
  • Material: 4140 Chrome Moly Steel
  • Chamber: 5.56x45mm NATO
  • Twist Rate: 1 in 8″
  • Chrome Lined: No
  • Finish: Melonite QPQ
  • M4 Feed Ramps: Yes
  • Muzzle Thread Pattern: 1/2″-28
  • Gas Port Location: Carbine
  • Exterior Diameter at Gas Port: 0.750″

All NFA Rules Apply!


Barrel Length


Barrel Profile




Thread Pitch


Twist Rate


Gas Block Platform


Gas System



Yankee Hill Machine




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10.5” Yankee Hill 5.56 NATO 1×18 Threaded/Diamond Fluted Barrel

Our Price:

10.5'' Yankee Hill 5.56 NATO 1x18 Threaded/Diamond Fluted Barrel $158.40
  • MSRP$167.75
  • MPNYHM-58-TF
  • UPC841812101406

Total in stock: 6

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